public void Reservation_Test(RealTimeInventory inventory, int toReserve)
        {
            IInventoryServiceCompletedMessage response = null;

            using (var testHelper = CreateInventoryServiceServer(inventory))
                response = testHelper.ReserveAsync(inventory, toReserve).WaitAndGetOperationResult();

            InventoryServiceSpecificationHelper.AssertReservations(inventory, toReserve, response);
        }